The Nevada Department of Agriculture (NDA) is investigating the deaths of several adopted feral horses found on a property owned by wild horse advocate Madeleine Pickens. Additionally, Pickens is offering a $100,000 reward for information leading to the arrest and conviction of those responsible for the incident.

In 2011, Pickens, wife of Texas oilman T. Boone Pickens, acquired property to establish Mustang Monument, a sustainable resort and preserve for wild horses south of Wells, Nevada. When the property was purchased, Pickens applied to establish a sanctuary for Bureau of Land Management (BLM) horses. The plan requested that the BLM pay a per horse stipend to the nonprofit Save America’s Mustangs Foundation for the horses’ care, but the plan never materialized. Today, the resort offers visitors tours of the property to view horses Pickens adopted.

On Aug. 18, Mustang Monument posted a statement on its website indicating that, during an extended period of very hot weather, trespassers cut fences and shut down water lines on the property, which resulted in the deaths of several horses.

Rebecca Allured, NDA spokeswoman, later confirmed that 11 adopted feral horses were found dead on the property and that more horses were discovered dead outside the property. She confirmed that the NDA is leading the investigation into the deaths.

In a written statement, Nevada State Veterinarian J.J. Goicoechea DVM, said that while responsibility for the circumstances connected to the deaths remains under investigation, care for animals “is ultimately the obligation of the livestock owner.”

“We alert all livestock own